Sue Williamson - EY

Sue Williamson

Listed in Best Lawyers since 2012

Sue leads the EY Melbourne Tax Controversy practice.

Prior to joining EY Sue had been a tax partner in two major Australian law firms (Allens and Clayton Utz) for 16 years.

She has advised a broad range of clients on the full spectrum of taxation matters including income tax, stamp duty, GST, tax disputes, alternative dispute resolution (ADR) and tax litigation (including administrative (ADJR) applications and Freedom of Information (FOI) applications and issues).

Sue was the 2008 President of the Taxation Institute of Australia.

Her experience includes:

  • Acting in various Federal Court, High Court, Supreme Court and AAT tax cases including for:
  • BHP Billiton Ltd
  • Shell Ltd 
  • Rio Tinto Ltd
  • Asciano Ltd
  • Tabcorp Ltd
  • Exxon Mobil Group
  • World Vision
  • PTTEP Pty Ltd
  • Conducting ADR for taxpayer’s including mediations and conciliations successfully resolved through negotiated settlements.
  • Advising a broad range of clients in relation to the management of audits and settlement of disputes including transfer pricing reviews, negotiation of APAs and disputes including the factual support for the disputes, technical and strategic issues
  • Participating in various industry and government committees, consults with Treasury and the Australian Taxation Office on taxation issues.
  • Member Australian Taxation Office NTLG Dispute Resolution Committee
  • Member of 2013 round table established to consult with Treasury in relation to Part IVA amendments and the 2014 round table established to consult to Treasury on the extension of the Commissioner’s discretion.
  • A regular presenter of seminars to clients and the profession.


  • Bachelor of Laws and Commerce, University of Melbourne
  • Masters of Law (Taxation), Monash University
  • Accredited mediator

Professional Memberships/Activities

  • University of Melbourne:  Senior Fellow (lecturing in Masters of Taxation Law program)
  • Fellow Tax Institute (Life), 2008 President  
  • Fellow Certified Practising Accountant
  • Affiliate Institute of Chartered Accountants
  • Registered Tax Agent
  • Member Australian Institute of Company Directors
  • Member Law Council of Australia
  • Member LeadR



Office Location

The Ernst & Young Building
Level 23, Eight Exhibition Street
Melbourne, VIC 3000

Practice Areas

Tax Law